<div class="layui-side-title pl20 fz20">功能导航</div>
<span class="toggle-icon" id="admin-side-toggle"></span>
<div class="layui-side-scroll">
  <!-- 左侧导航区域（可配合layui已有的垂直导航） -->
  <ul class="layui-nav layui-nav-tree"  lay-filter="test">
    <li class="layui-nav-item layui-nav-itemed">
      <a class="layui-nav-item-title" href="javascript:;">基础数据</a>
      <dl class="layui-nav-child">
        <dd class="menu-unit" data-link="costService"><a href="javascript:;">费用代码维护</a></dd>
        <dd class="menu-unit" data-link="classifyService"><a href="javascript:;">分类/模块维护</a></dd>
        <dd class="menu-unit" data-link="materialService"><a href="javascript:;">运材安维护</a></dd>
      </dl>
    </li>
    <li class="layui-nav-item">
      <a class="layui-nav-item-title" href="javascript:;">业务处理</a>
      <dl class="layui-nav-child">
        <dd class="menu-unit" data-link="project/project"><a href="javascript:;">新建项目</a></dd>
      </dl>
    </li>
  </ul>
</div>